<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="90px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">{{scope.row.add_time|dateFormat}}</template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="editGoods(scope.row.goods_id)"
            ></el-button>
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      ></el-pagination>
    </el-card>
    <!-- 修改商品对话框 -->
    <el-dialog title="修改商品" :visible.sync="editDialogVisible" width="50%">
      <!-- 修改表单 -->
      <el-form :model="editRuleForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editRuleForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model="editRuleForm.goods_price" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" type="number" prop="goods_number">
          <el-input v-model="editRuleForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" type="number" prop="goods_weight">
          <el-input v-model="editRuleForm.goods_weight"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editDialog">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询对象
      queryInfo: {
        //查询参数
        query: '',
        //   当前页码
        pagenum: 1,
        //   每页显示条数
        pagesize: 10
      },
      //商品列表数据
      goodslist: [],
      //总数据条数
      total: 0,
      // 修改商品数据
      editRuleForm: {},
      // 控制显示修改表单对话框
      editDialogVisible: false,
      // 修改表单验证规则
      editFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！')
      }
      console.log(res.data)

      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // 分页修改
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 分页修改
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 删除商品
    async removeById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！')
      }
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败！')
      }
      this.$message.success('删除成功！')
      this.getGoodsList()
    },
    // 添加商品
    goAddpage() {
      this.$router.push('/goods/add')
    },
    // 点击显示修改商品对话框获得数据
    async editGoods(id) {
      // 查询数据
      const { data: res } = await this.$http.get('goods/' + id)
      this.editRuleForm = res.data
      this.editDialogVisible = true
      // console.log(res)
    },
    // 提交修改商品数据
    editDialog() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项目！')
        }
        const { data: res } = await this.$http.put(
          'goods/' + this.editRuleForm.goods_id,
          this.editRuleForm
        )
        if (res.meta.status!== 200) {
          return this.$message.error('数据修改失败!')
        }
        this.$message.success('数据修改成功')
        this.getGoodsList()
        this.editDialogVisible = false
      })
    }
  }
}
</script>

<style lang="less" scoped>
</style>